fix: add unbuffered python output in dev runner, cursor pattern in analytics

- dev_run.sh: add -u flag so log output is not buffered (real-time visibility)
- analytics.py: use explicit cursor() with try/finally close instead of
  calling execute() directly on the connection (thread-safe cursor lifecycle)
- .sops.yaml: add second age public key for local dev decryption access
- content/__init__.py: whitespace-only formatting fix

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.sops.yaml

@@ -1,3 +1,3 @@
 creation_rules:
   - path_regex: \.env\..+\.sops$
-    age: age1f5002gj4s78jju45jd28kuejtcfhn5cdujz885fl7z2p9ym68pnsgky87a
+    age: age1f5002gj4s78jju45jd28kuejtcfhn5cdujz885fl7z2p9ym68pnsgky87a,age1wjepykv3glvsrtegu25tevg7vyn3ngpl607u3yjc9ucay04s045s796msw